S-92845A743 1/4"-28 x 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and long-term reliability.
• Exceptional thread precision and secure fastening with Class 3A thread fit, minimizing backlash and ensuring vibration resistance in critical assemblies.
• High-strength performance backed by Rockwell B80 hardness, providing excellent durability and resistance to wear under load.
• Secure, flush installation with a headless hex drive design, allowing for tamper-resistant and space-saving applications.
• Enhanced gripping power due to the extended tip configuration, which improves holding force in soft materials or on shafts.
• Reliable dimensional accuracy with fine UNF threads and tight tolerances, ensuring consistent performance in precision engineering.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing safety and regulatory adherence for global supply chains.

Professional Applications & Engineering Value

This 1/4"-28 UNF Class 3A set screw is engineered to address common industrial challenges such as component slippage, corrosion-induced failure, and assembly inconsistency. Made from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it suitable for applications in machinery, automotive, and electronics where environmental factors are a concern. The fine thread and Class 3A fit provide a tight, secure connection that reduces the risk of loosening under vibration, while the headless hex drive allows for a clean, low-profile installation. The extended tip enhances grip on surfaces like shafts or collars, preventing movement in high-torque settings. Ideal for precision assemblies requiring reliable, long-term fastening with minimal maintenance.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise dimensional control and a UNF fine thread type. It is manufactured in accordance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. The product features an extended tip with specific diameter and length tolerances, supporting consistent performance in regulated and high-demand industrial applications.